Magnetic properties and pseudogap formation in infinite-layer nickelates: insights from the single-band Hubbard model

Abstract

We study the magnetic and spectral properties of a single-band Hubbard model for the infinite-layer nickelate compound LaNiO${}_2$. As spatial correlations turn out to be the key ingredient for understanding its physics, we use two complementary extensions of the dynamical mean-field theory to take them into account: the cellular dynamical mean-field theory and the dynamical vertex approximation. Additionally to the systematic analysis of the doping dependence of the non-Curie-Weiss behavior of the uniform magnetic susceptibility, we provide insight into its relation to the formation of a pseudogap regime by the calculation of the one-particle spectral function and the magnetic correlation length. The latter is of the order of a few lattice spacings when the pseudogap opens, indicating a strong-coupling pseudogap formation in analogy to cuprates.

8 pages, 5 figures, submitted to the Condensed Matter Physics section in Frontiers in Physics for the research topic "Advances in Superconducting Infinite-Layer and Related Nickelates"

References in corpus (10)

• Continuous-time Monte Carlo methods for quantum impurity models
• Dynamical vertex approximation - a step beyond dynamical mean field theory
• Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices
• Fate of the false Mott-Hubbard transition in two dimensions
• Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
• Pseudogap and antiferromagnetic correlations in the Hubbard model
• Phase diagram of nickelate superconductors calculated by dynamical vertex approximation
• Dynamical Mean Field Studies of Infinite Layer Nickelates: Physics Results and Methodological Implications
• Effects of interaction strength, doping, and frustration on the antiferromagnetic phase of the two-dimensional Hubbard model
• Doping-driven pseudogap-metal-to-metal transition in correlated electron systems

Cited by in corpus (9)

• Mott transition and pseudogap of the square-lattice Hubbard model: results from center-focused cellular dynamical mean-field theory
• Investigation of spin excitations and charge order in bulk crystals of the infinite-layer nickelate LaNiO${}_2$
• Interplay between the charge density wave phase and a pseudogap under antiferromagnetic correlations
• The finite-difference parquet method: Enhanced electron-paramagnon scattering opens a pseudogap
• Failure of the Baym-Kadanoff construction to match consistently quantum dynamics with thermodynamic critical behavior
• Emergence and tunability of Fermi-pocket and electronic instabilities in layered Nickelates
• Single-particle spectra and magnetic susceptibility in the Emery model: a dynamical mean-field perspective
• Coherent cellular dynamical mean-field theory: a real-space quantum embedding approach to disorder in strongly correlated electron systems
• Pseudogap and strange metal states in the square-lattice Hubbard model: A comprehensive study